Analyze Diet
Equine veterinary journal2025; doi: 10.1111/evj.70084

Born to run? Associations between gestational and early-life exposures and later-life performance outcomes in Thoroughbreds.

Abstract: Gestational and early-life exposures may modulate development during growth and influence future athletic performance. Objective: To investigate associations between gestational and early-life exposures in Thoroughbreds and (i) likelihood of racing, (ii) total number of runs and (iii) total prizemoney by the end of the 3-year-old year. Methods: Prospective cohort. Methods: Daily records were kept on the location and duration of turnout, management and veterinary-attended episodes of disease or injury from birth until leaving the farm or study exit for 129 Thoroughbred foals on six stud farms. Dams' signalments, reproductive and gestational health records were collated concurrently. Available race performance records to the end of the fourth year of life were collected from industry databases. Mixed effects logistic and linear regression modelling, including farm, mare and stallion as random effects, were used to investigate associations between gestational and early-life exposures and race performance outcomes. Results: Overall, 76% (98/129, 95% CI: 68-82) of horses raced, making a median of 7 starts (IQR 4-11, range 1-23) and earning a median of £6898 (IQR 1712-17,987; range 0-197,601) in prizemoney. Increasing average daily turnout time (hours) and turnout area (acres) in the first 6 months of life were associated with increased odds of racing and increased total prizemoney earned, respectively (OR 1.31, 95% CI: 1.09-1.58 p = 0.004 and β-coefficient = 0.32 (lnGBP), 95% CI: 0.03-0.61, p = 0.03). Age at weaning (days) was associated with increased odds of racing and an increased total number of runs (OR 1.03, 95% CI: 1.01-1.05 and β-coefficient = 0.09, 95% CI: 0.04-0.14, p < 0.05, respectively). Conclusions: Absence of training-related data; low study power for some exposure variables. Conclusions: More extensive early-life turn out practices and later weaning enhanced later-life race performance outcomes. This could be due to increased opportunity for positive musculoskeletal tissue adaptation and optimal growth and development rates during a critical window of developmental plasticity. Unassigned: Expositionen während der Trächtigkeit und frühen Lebensphasen können die Entwicklung während des Wachstums und die zukünftige sportliche Leistungsfähigkeit beeifnflussen. Unassigned: Untersuchung von Zusammenhängen zwischen pränatalen und früher Expositionen bei Vollblütern und (i) der Wahrscheinlichkeit zu starten, (ii) der Gesamtanzahl an Rennen sowie (iii) dem insgesamt erzielten Preisgeld bis zum Ende des dritten Lebensjahres. Methods: Prospektive Kohortenstudie. Methods: Für 129 Vollblutfohlen auf sechs Gestüten wurden tägliche Aufzeichnungen zur Auslaufdauer und ‐fläche, Haltung sowie tierärztlich betreuten Erkrankungs‐ und Verletzungsereignissen von der Geburt bis zum Verlassen des Gestüts bzw. Studienaustritt geführt. Parallel wurden Angaben zur Abstammung sowie zur reproduktiven und trächtigkeitsbezogenen Gesundheit der Mütter erfasst. Leistungsdaten bis zum Ende des vierten Lebensjahres wurden aus brancheneigenen Datenbanken gesammelt. Zur Untersuchung der Zusammenhänge zwischen Expositionen und Leistungsparametern wurden gemischte logistische und lineare Regressionsmodelle mit Farm, Stute und Hengst als Zufallseffekte verwendet. Results: Insgesamt starteten 76 % der Pferde (98/129, 95 %‐KI: 68–82), mit einer Mediananzahl von 7 Rennen (IQR 4–11, Spanne 1–23) und einem Medianpreisgeld von £6.898 (IQR 1.712–17.987, Spanne 0–197.601). Eine längere durchschnittliche tägliche Auslaufzeit (in Stunden) und größere Auslauffläche (in Acres) in den ersten 6 Lebensmonaten waren mit einer erhöhten Wahrscheinlichkeit zu starten bzw. mit höherem erzieltem Preisgeld assoziiert (OR 1,31, 95 %‐KI: 1,09–1,58, P=0,004 und β‐Koeffizient=0,32 (lnGBP), 95 %‐KI: 0,03–0,61, P=0,03). Ein höheres Absetzalter (in Tagen) war mit einer erhöhten Startwahrscheinlichkeit sowie einer höheren Anzahl an Rennen verbunden (OR 1,03, 95 %‐KI: 1,01–1,05 und β‐Koeffizient=0,09, 95 %‐KI: 0,04–0,14, jeweils P<0,05).
Publication Date: 2025-08-25 PubMed ID: 40851510DOI: 10.1111/evj.70084Google Scholar: Lookup
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

Overview

  • This study explored how conditions and exposures during gestation and early life affect the racing performance of Thoroughbred horses by age three, focusing on racing participation, number of starts, and total earnings.
  • Key findings indicate that more daily turnout time, larger turnout areas, and later weaning are linked to better racing outcomes, possibly by promoting optimal musculoskeletal development during critical growth periods.

Background and Objective

  • Gestational and early-life environments are crucial for developing tissues and systems that influence later athletic abilities.
  • The researchers aimed to assess whether variables such as turnout management, health during early life, and maternal reproductive history are associated with the likelihood of a Thoroughbred racing, how many races it runs, and how much prizemoney it earns by the end of its third year.

Study Design and Methods

  • Type of study: Prospective cohort study tracking foals from birth until they left the farm or the study ended.
  • Subjects: 129 Thoroughbred foals from six different stud farms.
  • Data collected:
    • Daily records on turnout: how long horses spent outside and the size of the turnout area during the first 6 months.
    • Management practices and records of veterinary-treated diseases or injuries during early life.
    • Maternal health, reproductive records, and breed information collected in parallel.
    • Racing data up to the end of the fourth year of life from official industry databases, including racing status, number of races, and prize money earned.
  • Statistical analysis:
    • Used mixed-effects logistic regression for the binary outcome of whether a horse raced or not.
    • Used linear regression models for continuous outcomes: total number of runs and total prizemoney.
    • Random effects included farm, mare, and stallion to account for clustering and shared genetics or environment.

Key Results

  • Racing participation: 76% of foals (98/129) started in at least one race.
  • Performance summary:
    • Median number of races per horse: 7 (range: 1–23).
    • Median prizemoney earned: £6898 (ranging from 0 to £197,601).
  • Turnout duration: Greater average daily turnout time (in hours) during the first 6 months was associated with a 31% increase in odds of participating in racing (OR 1.31, 95% CI 1.09–1.58, p=0.004).
  • Turnout area size: Larger turnout areas (in acres) were associated with increased total prizemoney earned (β-coefficient = 0.32 on the natural log scale of GBP, 95% CI 0.03–0.61, p=0.03).
  • Age at weaning: Later weaning age in days was linked to increased odds of racing (OR 1.03 per day delay, 95% CI 1.01–1.05) and a higher total number of race starts (β = 0.09, 95% CI 0.04–0.14), both statistically significant.

Interpretation and Conclusions

  • Early-life management practices that provide more opportunities for turnout—both in duration and space—seem to benefit the future athletic performance of Thoroughbreds.
  • Later weaning might support better performance, possibly through extended maternal nutrition or social factors influencing development.
  • The mechanisms likely involve enhanced musculoskeletal adaptation and healthier growth trajectories during a “window of developmental plasticity” when tissue growth is highly responsive to environmental stimuli.
  • The absence of training data in the study is a limitation, as training intensity and quality could also influence performance outcomes.
  • Some analyses had low statistical power, so findings should be confirmed with larger populations.

Significance for Thoroughbred Breeding and Training

  • Management decisions in the first six months—including allowing more daily turnout hours in larger spaces and careful timing of weaning—could be critical for optimizing future racehorse performance.
  • This suggests that attention to early-life environmental factors could complement genetic selection in improving racing success.
  • Further research incorporating training regimen data and long-term follow-up would be valuable to refine recommendations.

Cite This Article

APA
Mouncey R, de Mestre AM, Arango-Sabogal JC, Verheyen KL. (2025). Born to run? Associations between gestational and early-life exposures and later-life performance outcomes in Thoroughbreds. Equine Vet J. https://doi.org/10.1111/evj.70084

Publication

ISSN: 2042-3306
NlmUniqueID: 0173320
Country: United States
Language: English

Researcher Affiliations

Mouncey, Rebecca
  • Department of Pathobiology and Population Sciences, Royal Veterinary College, Hatfield, UK.
de Mestre, Amanda M
  • Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, New York, USA.
Arango-Sabogal, Juan Carlos
  • Département de pathologie et microbiologie, Faculté de médecine vétérinaire, Université de Montréal, Quebec, Canada.
Verheyen, Kristien L
  • Department of Pathobiology and Population Sciences, Royal Veterinary College, Hatfield, UK.

Grant Funding

  • EPDF 2022-9 / Horserace Betting Levy Board
  • VET/PRJ/791 / Horserace Betting Levy Board
  • Racing Foundation
  • Royal Veterinary College's Mellon Fund for Equine Research

References

This article includes 66 references
  1. Gluckman PD, Hanson MA, Cooper C, Thornburg KL. Effect of in utero and early‐life conditions on adult health and disease.. N Engl J Med 2008;359:61–73.
    doi: 10.1056/nejmra0708473google scholar: lookup
  2. Chavatte‐Palmer P, Peugnet P, Robles M. Developmental programming in equine species: relevance for the horse industry.. Anim Front 2017;7:48–54.
    doi: 10.2527/af.2017-0128google scholar: lookup
  3. Bianco‐Miotto T, Craig JM, Gasser YP, van Dijk SJ, Ozanne SE. Epigenetics and DOHaD: from basics to birth and beyond.. J Dev Orig Health Dis 2017;8(5):513–519.
    doi: 10.1017/s2040174417000733google scholar: lookup
  4. Peugnet P, Robles M, Mendoza L, Wimel L, Dubois C, Dahirel M. Effects of moderate amounts of barley in late pregnancy on growth, glucose metabolism and osteoarticular status of pre‐weaning horses.. PLoS One 2015;10(4):e0122596.
  5. Vander Heyden I, Lejeune JP, Caudron I, Detilleux J, Sandersen C, Chavatte‐Palmer P. Association of breeding conditions with prevalence of osteochondrosis in foals.. Vet Rec 2013;172(3):68.
    doi: 10.1136/vr.101034google scholar: lookup
  6. Peugnet P, Mendoza l, Wimel l, Duchamp G, Dubois C, Reigner F. Longitudinal study of growth and osteoarticular status in foals born to between‐breed embryo transfers.. J Equine Vet Sci 2016;37:24–38.
  7. Mouncey R, Arango‐Sabogal JC, de Mestre AM, Verheyen KL. Gestation length is associated with early‐life limb deformities in Thoroughbred foals.. J Equine Vet Sci 2023;129:104896.
  8. Kearns CF, Mckeever KH, Abe T. Overview of horse body composition and muscle architecture: implications for performance.. Vet J 2002;164:224–234.
    doi: 10.1053/tvjl.2001.0702google scholar: lookup
  9. Verwilghen DR, Janssens S, Busoni V, Pille F, Johnston C, Serteyn D. Do developmental orthopaedic disorders influence future jumping performances in warmblood stallions?. Equine Vet J 2013;45(5):578–581.
    doi: 10.1111/evj.12027google scholar: lookup
  10. Kane AJ, McIlwraith CW, Park RD, Rantanen NW, Morehead JP, Bramlage LR. Radiographic changes in thoroughbred yearlings. Part 2: associations with racing performance.. Equine Vet J 2003;35:366–374.
  11. Klewitz J, Struebing C, Rohn K, Goergens A, Martinsson G, Orgies F. Effects of age, parity, and pregnancy abnormalities on foal birth weight and uterine blood flow in the mare.. Theriogenology 2015;83:721–729.
  12. Ousey JC, Kolling M, Newton R, Wright M, Allen WR. Uterine haemodynamics in young and aged pregnant mares measured using Doppler ultrasonography.. Equine Vet J 2012;44(41):15–21.
  13. Barron JK. The effect of maternal age and parity on the racing performance of thoroughbred horses.. Equine Vet J 1995;27:73–75.
  14. Sharman P, Young AJ, Wilson AJ. Evidence of maternal and paternal age effects on speed in Thoroughbred racehorses.. R Soc Open Sci 2022;9:220691.
    doi: 10.1098/rsos.220691google scholar: lookup
  15. Finocchio EJ, Rosenzweig M. Significance of birthrank, maternal age and parity on race performance in thoroughbreds.. Proc Am Assoc Equine Pract 1985;41:64–67.
  16. Firth EC, Rogers CW, van Weeren PR, Barneveld A, McIlwraith CW, Kawcak CE, et al. Mild exercise early in life produces changes in bone size and strength but not density in proximal phalangeal, third metacarpal and third carpal bones of foals. Vet J. 2011;190:383–389. https://doi.org/10.1016/j.tvjl.2010.11.016
  17. Kasashima Y, Smith RK, Birch HL, Takahashi T, Kusano K, Goodship AE. Exercise‐induced tendon hypertrophy: cross‐sectional area changes during growth are influenced by exercise. Equine Vet J. 2002;34:264–268. https://doi.org/10.1111/j.2042‐3306.2002.tb05430.x
  18. Mouncey R, Arango‐Sabogal JC, de Mestre A, Verheyen KL. Associations between turn out practices and rates of musculoskeletal disease and injury in thoroughbred foals and yearlings on stud farms in the United Kingdom. Equine Vet J. 2024;56(5):892–902. https://doi.org/10.1111/evj.14038
  19. Rogers CW, Firth EC, Mcilwraith CW, Barneveld A, Goodship AE, Kawcak CE, et al. Evaluation of a new strategy to modulate skeletal development in racehorses by imposing track‐based exercise during growth: the effects on 2‐ and 3‐year‐old racing careers. Equine Vet J. 2008;40:119–127. https://doi.org/10.2746/042516408x266088
  20. van Weeren PR, Barneveld A. Study design to evaluate the influence of exercise on the development of the musculoskeletal system of foals up to age 11 months. Equine Vet J. 1999;31(31):4–8. https://doi.org/10.1111/j.2042-3306.1999.tb05307.x
  21. Brama PA, Tekoppele JM, Bank, RA, van Weeren PR, Barneveld A. Influence of different exercise levels and age on the biochemical characteristics of immature equine articular cartilage. Equine Vet J. 1999;31:55–61. https://doi.org/10.1111/j.2042-3306.1999.tb05314.x
  22. Brama PA, Firth EC, Van Weeren PR, Tuukkanen J, Holopainen J, Helminen HJ, et al. Influence of intensity and changes of physical activity on bone mineral density of immature equine subchondral bone. Equine Vet J. 2009;41:564–571. https://doi.org/10.2746/042516409X429437
  23. Barneveld A, Van Weeren PR. Conclusions regarding the influence of exercise on the development of the equine musculoskeletal system with special reference to osteochondrosis. Equine Vet J. 1999;31(S31):112–119. https://doi.org/10.1111/j.2042-3306.1999.tb05323.x
  24. Dyson PK, Jackson BF, Pfeiffer DU, Price JS. Days lost from training by two‐ and three‐year‐old thoroughbred horses: a survey of seven UK training yards. Equine Vet J. 2008;40:650–657. https://doi.org/10.2746/042516408X363242
  25. Plevin S, McLellan J. The effect of insertional suspensory branch desmitis on racing performance in juvenile thoroughbred racehorses. Equine Vet J. 2014;46:451–457. https://doi.org/10.1111/evj.12161
  26. Spike‐Pierce DL, Bramlage LR. Correlation of racing performance with radiographic changes in the proximal sesamoid bones of 487 thoroughbred yearlings. Equine Vet J. 2003;35:350–353. https://doi.org/10.2746/042516403776014262
  27. Mouncey R, Arango‐Sabogal JC, de Mestre AM, Verheyen KL. Descriptive study of medication usage and occurrence of disease and injury during gestation in Thoroughbred broodmares. J Equine Vet Sci. 2022;118:104104. https://doi.org/10.1016/j.jevs.2022.104104
  28. Mouncey R, Arango‐Sabogal JC, de Mestre AM, Verheyen KL. Incidence of disease, injury and death in thoroughbred foals and yearlings on stud farms in the UK and Ireland. Vet Rec. 2023;192:e2994. https://doi.org/10.1002/vetr.2994
  29. Weatherbys. Return of mares 2019. Weatherbys bloodstock publications supplement to volume 46 of the general stud book. Wellingborough: Weatherbys Bloodstock Publications; 2019.
  30. Stata Corporation. Linktest‐specification link test for single equation models. https://www.stata.com/manuals/rlinktest.pdf
  31. Stata Corporation. Margins—marginal means, predictive margins, and marginal effects. https://www.stata.com/manuals/rmargins.pdf
  32. Cameron AC, Trivedi PK. Prediction in logs: the retransformation problem. Microeconometrics using Stata. College Station, TX: Stata Press; 2010. p. 108–110.
  33. Price Waterhouse Cooper. Economic impact study of Britain's thoroughbred breeding in 2023. https://www.thetba.co.uk/asset/A8F0D1D1-C908-4767-9BF3ED846785D9DC/
  34. Rogers CW, Gee EK, Dittmer KE. Growth and bone development in the horse: when is a horse skeletally mature? Animals. 2021;11:3402. https://doi.org/10.3390/ani11123402
  35. van Weeren PR, Brama PAJ, Barneveld A. Exercise at Young age may influence the final quality of the equine musculoskeletal system. Proc Am Assoc Equine Pract. 2000;46:25–29.
  36. Boy V, Duncan P. Time‐budgets of carmargue horses. Developmental changes in the time budgets of foals. Behaviour. 1979;71:187–202. https://doi.org/10.1163/156853979X00160
  37. Boyd LE. Ontogeny of behavior in Przewalski horses. Appl Anim Behav Sci 1988;21:41–69. https://doi.org/10.1016/0168-1591(88)90100-1
  38. Kurvers CM, Van Weeren PR, Rogers CW, Van Dierendonck MC. Quantification of spontaneous locomotion activity in foals kept in pastures under various management conditions. Am J Vet Res. 2006;67:1212–1217. https://doi.org/10.2460/ajvr.67.7.1212
  39. Rogers CW, Dittmer KE. Does juvenile play programme the equine musculoskeletal system? Animals. 2019;9:646. https://doi.org/10.3390/ani9090646
  40. Maisonpierre IN, Sutton MA, Harris P, Menzies‐Gow N, Weller R, Pfau T. Accelerometer activity tracking in horses and the effect of pasture management on time budget. Equine Vet J. 2019;51:840–845. https://doi.org/10.1111/evj.13130
  41. Murase H, Matsui A, Endo Y, Sato F, Hada T. Changes of lying behavior in thoroughbred foals influenced by age, pasturing time, and weather conditions. J Equine Sci. 2018;29:61–66. https://doi.org/10.1294/jes.29.61
  42. Majecka K, Klawe A. Influence of paddock size on social relationships in domestic horses. J Appl Anim Welf Sci. 2018;21:16–18. https://doi.org/10.1080/10888705.2017.1360773
  43. Hampson BA, Morton JM, Mills PC, Trotter MG, Lamb DW, Pollitt CC. Monitoring distances travelled by horses using GPS tracking collars. Aust Vet J. 2010;88:176–181. https://doi.org/10.1111/j.1751-0813.2010.00564.x
  44. Jørgensen GHM, Bøe KE. A note on the effect of daily exercise and paddock size on the behaviour of domestic horses (Equus caballus). Appl Anim Behav Sci. 2007;107:166–173. https://doi.org/10.1016/j.applanim.2006.09.025
  45. Chaya L, Cowan E, McGuire B. A note on the relationship between time spent in turnout and behaviour during turnout in horses (Equus caballus). Appl Anim Behav Sci 2006;98:155–160. https://doi.org/10.1016/j.applanim.2005.08.020
  46. Hartmann E, Søndergaard E, Keeling LJ. Keeping horses in groups: a review. Appl Anim Behav Sci. 2012;136:77–87. https://doi.org/10.1016/j.applanim.2011.10.004
  47. Jørgensen GHM, Bøe KE. Individual paddocks versus social enclosure for horses. In: Hausberger M, Søndergaard E, MartinRosset W, editors. Horse behaviour and welfare. Wageningen: Wageningen Academic Publishers; 2007. p. 79–83.
  48. Garland T, Cadney MD, Waterland RA. Early‐life effects on adult physical activity: concepts, relevance, and experimental approaches. Physiol Biochem Zool. 2017;90:1–14. https://doi.org/10.1086/689775
  49. Zhang N, Wang X, Feng M, Li M, Wang J, Yang H, et al. Early‐life exercise induces immunometabolic epigenetic modification enhancing anti‐inflammatory immunity in middle‐aged male mice. Nat Commun. 2024;15:3103. https://doi.org/10.1038/s41467-024-47458-3
  50. Haire‐Joshu D, Tabak R. Preventing obesity across generations: evidence for early life intervention. Annu Rev Public Health. 2016;37:253–271. https://doi.org/10.1146/annurev-publhealth-032315-021859
  51. Acosta W, Meek TH, Schutz H, Dlugosz EM, Vu KT, Garland T. Effects of early‐onset voluntary exercise on adult physical activity and associated phenotypes in mice. Physiol Behav. 2015;149:279–286. https://doi.org/10.1016/j.physbeh.2015.06.020
  52. Haapala EA, Leppanen MH, Skog H, Lubans DR, Viitasalo A, Lintu N, et al. Childhood physical fitness as a predictor of cognition and mental health in adolescence: the PANIC study. Sports Med. 2024;55(2):487–497. https://doi.org/10.1007/s40279-024-02107-z
  53. Flash ML, Wong ASM, Stevenson MA, Gilkerson JR. Barriers to entering race training before 4 years of age for thoroughbred horses born in the 2014 Australian foal crop. PLoS One. 2020;15:e0237003. https://doi.org/10.1371/journal.pone.0237003
  54. Langenhof MR, Komdeur J. Why and how the early‐life environment affects development of coping behaviours. Behav Ecol Sociobiol. 2018;72:34. https://doi.org/10.1007/s00265-018-2452-3
  55. Warren LK, Lawrence LM, Parker AL, Barnes T, Griffin AS. The effect of weaning age on foal growth and radiographic bone density. J Equine Vet Sci. 1998;18:335–342. https://doi.org/10.1016/S0737-0806(98)80548-0
  56. Reichmann P, Moure A, Gamba HR. Bone mineral content of the third metacarpal bone in quarter horse foals from birth to one year of age. J Equine Vet Sci. 2004;24:391–396. https://doi.org/10.1016/j.jevs.2004.08.002
  57. Dwyer J, Roshier AL, Campbell M, Hill B, Freeman SL. Effects of weaning‐related stress on the emotional health of horses—a scoping review. Equine Vet J. 2025;57(3):546–554. https://doi.org/10.1111/evj.14412
  58. McGreevy P, Berger J, De Brauwere N, Doherty O, Harrison A, Fielder J, et al. Using the five domains model to assess the adverse impacts of husbandry, veterinary, and equitation interventions on horse welfare. Animals. 2018;8(3):41. https://doi.org/10.3390/ani8030041
  59. Eller OC, Morris EM, Thyfault JP, Christianson JA. Early life stress reduces voluntary exercise and its prevention of diet‐induced obesity and metabolic dysfunction in mice. Physiol Behav. 2020;223:113000. https://doi.org/10.1016/j.physbeh.2020.113000
  60. Maniam J, Antoniadis C, Morris MJ. Early‐life stress, HPA axis adaptation, and mechanisms contributing to later health outcomes. Front Endocrinol. 2014;5:73. https://doi.org/10.3389/fendo.2014.00073
  61. Henry S, Sigurjonsdottir H, Klapper A, Joubert J, Montier G, Hausberger M. Domestic foal weaning: need for re‐thinking breeding practices? Animals. 2020;10(2):361. https://doi.org/10.3390/ani10020361
  62. Gaughan EM. Flexural limb deformities of the carpus and fetlock in foals. Vet Clin North Am Equine Pract. 2017;33:331–342. https://doi.org/10.1016/j.cveq.2017.03.004
  63. Adams SB, Santschi EM. Management of congenital and acquired flexural limb deformities. Proc Am Assoc Equine Pract. 2000;46:117–125.
  64. Mouncey RR, Alarcon P, Verheyen KL. Determinants of thoroughbred yearling sales price in the UK. Vet Rec Open. 2024;11:e81. https://doi.org/10.1002/vro2.81
  65. Arango‐Sabogal JC, Mouncey R, de Mestre AM, Verheyen K. Date of birth and purchase price as foals or yearlings are associated with thoroughbred flat race performance in the United Kingdom and Ireland. Vet Rec Open. 2022;9:e43. https://doi.org/10.1002/vro2.43
  66. Brutsaert TD, Parra EJ. What makes a champion? Explaining variation in human athletic performance. Respir Physiol Neurobiol. 2006;151:109–123. https://doi.org/10.1016/j.resp.2005.12.013

Citations

This article has been cited 0 times.